Figure 6
From: Application of electrical resistivity tomography (ERT) for rock mass quality evaluation

Resistivity imaging (increasing from dark blue to red white on a color scale) along three profiles (red lines) including faults (dashed red lines) for: (a) the inner view of 3D ERT, (b) the outer view of 3D ERT, (c) different depths from ground surface to 100 m with 3D ERT (inner view), and (d) different depths from ground surface to 100 m with 3D ERT (outer view).